Machine for working rubber



No. 752,975. PATBNTED FEB. 23, 1904.

' A, N; HOOD- 7 MACHINE FOR WORKING R ER.

APPLIGATION FILED JULY 3, 1

30 MODEL.

Patented February 23, 1904.

PAT T OFFICE.

ARTHUR n. noon, on BOSTON, MASSACHUSETTS.

MACHINE FOR WORKING RUBBER.

SPECIFIGATIOIV forming part of Letters Patent No. 752,975, dated February 23, 1904,

Application filed July 3, 1903- Serial No- 164,l68- (No model.)

To all whom it may concern.-

Be it known that I, ARTHUR N. H001), a citizen ofthe United States, residing at Boston, Massachusetts, have invented certain new and useful Improvements in Machines for 7Working Rubber, of which the following is a specification.

My invention relates to improvements in machines for manufacturing the various sheets of rubber-stock out of which the different parts are cut for use in making the boots and shoes, and more particularly to the manufacture of soles and uppers, which are largely made on engraved or figured rolls.

The invention consists in the peculiar arrangement of engraving or embossing and pressing rolls hereinafter described for forming a compound or double sheet having a surface taken from an engraved, embossed, or otherwise figured roll and running the rubberstock in such a way that all the unevennesses engraved on the roll will be filled by the material of which the rubber sheet is made and before that sheet leaves that engraved roll of uniting with it another sheet formed on different rolls, making a compound or double sheet which is pressed firmly into one solid compressed sheet having the impression ens graved on the roll and which sheet may consist of two separate qualities of rubber material and may be of different colors, different gravities, different costs, or to serve dilferent purposes, or for any purpose, and with or without a cloth back.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a diagrammatic sectional view of the machine. Fig. 2 is a similar view showing the machine reversed.

In the drawings I show two sets of rolls arranged one above the other in preferably the same horizontal plane, one set being shown at a Z) 0 and the other at f, g, and it. These rolls are of the ordinary form-t0 wit, plain cylindrical rolls adapted to form the rubberstock into a smooth sheet.

Referring to Fig. 1, the rubber is fed from the left between the rolls a 6, passes around roll Z) and between rolls Z) and 0, around roll 0, and between rolls 0 and d. The roll 0? is What is usually termed a finishingroll,being designed to impart the finishing-surface to the rubber sheet, and for this purpose its surface is usually engraved, embossed, or otherwise rendered uneven, wherebya figured or indented surface is produced upon the sheet of rubber passing from the machine. In order that the sheet may be a compound sheet, the first film (marked 0) must be joined to a second film, (indicated at y,) and this sheet is formed between the rollers f, g, and it, and passing between roll it and the finishing-roll j, which in this event would necessarily have a plain surface, it travels to and around the rolls 6 between it and the film 00. Roll 8 is a plain presser-roll, which thus unites the plain sheet coming from the set of rolls f 9 it onto the smooth back of the sheet or, the two films thus being blended into a compact and homogeneous sheet. The roll is is a similar presser-roll, which of course is out of action during the process above described.

It will be observed that the rolls 0 d e and j 72 7o are'arranged in reverse relation, and the rolls (2? and j are made removable and interchangeable. By this arrangement the direction of travel may be reversed, as indicated in Fig. 2, the film wpa'ssing to the set of rolls on the right and being blended to the film y between the rolls j and it, the roll 3' being the finishing-roll for the film y and roll 6 being inoperative. This capability of the machine for being reversed renders it extremely convenient for manipulation, and in addition the rolls are all located comparatively low or near the floor, so that it is accessible to operators. Furthermore, the space between the two sets of rolls provides ready access to the operator for inspection of the films being formed.

Having thus described my invention, what I claim is 1 1. A machine for working rubber comprising two sets of film-forming rolls, each set including a finishing-roll, a presser-roll arranged to coact with each finishing-roll, the finishing, and presser rolls of each set being arranged in reverse relation to the finishing and presser rolls of the other set, substantially as described.

2. A machine for working rubber comprising two sets of film-forming rolls, each set including a finishing-roll, a presser-roll arranged to coact with each finishing-roll, the finishing and presser' rolls of each set being arranged in reverse relation to the finishing and presser rolls of the other set, one of said finishingrolls having an engraved or uneven surface and said finishing-rolls being removable and interchangeable, substantially as described.

3. A machine for forming rubber comprising two sets of film-forming rolls, each set including a plurality of film-forming rolls arranged in a vertical row with a space between it and the other row and a finishing-roll arranged in proximity to the topmost roll on the inner side thereof, and a presser-roll in proximity to each finishing-roll, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ARTHUR N. HOOD. Witnesses:

MARSHAL CUTTING, MAY T. WERNER. 

